GX Screw Conveyor equipment for grain 1,Simple structure and Small dimensions 2,ISO9001:2008 3 ... , equivalent to use ISO1050-75 standard. It has been widely used in industries, such as building materials, metallurgy, chemical industry, light ... for conveying powder, granular, small block materials, such as cement, grain, chemical fertilizer, ash, sand, not suitable for conveying perishable, viscous ...